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Lag Spiking in Flightgear

Graphics issues like: bad framerates, weird colors, OpenGL errors etc. Bad graphics ar usually the result of bad graphics cards or drivers.
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- what OS (Windows Xp/Vista, Mac etc.) are you running?
- what FlightGear version do you use?
- what graphics card do you have?
- does the problem occur with any aircraft, at any airport?
- is there any output printed to the console (black window)?
- copy&paste your commandline (tick the "Show commandline box on the last page of FGRun or the "Others" section on the Mac launcher).
- please upload a screenshot of the problem.

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To run FlightGear on old computers with bad OpenGL support, please take a look at this wiki article. If you are seeing corrupted/broken textures, please see this article.

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Re: Lag Spiking in Flightgear

Postby Hooray » Mon Dec 21, 2020 5:27 pm

Parnikkapore wrote in Tue Oct 20, 2020 11:18 pm:My "startup routine" is to turn around in cockpit view, go to helicopter view, turn around there, then go back to cockpit view.


That's a suggestion that has been around, it seems to have to do with the way PagedLOD is now used - I think someone even posted a Nasal snippet to do this automatically during startup.
Basically:
- for-each view
- cycle-view
- look around (cycling through min/max values for each view axis)

(and only show the sim once that it's done).

Alternatively, this could also be in done C++ space. FlightGear is currently in the process of adopting CompositeViewer support: http://wiki.flightgear.org/CompositeViewer_Support
Please don't send support requests by PM, instead post your questions on the forum so that all users can contribute and benefit
Thanks & all the best,
Hooray
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Re: Lag Spiking in Flightgear

Postby The epic chicken » Mon Dec 21, 2020 5:41 pm

how much lag i get when looking around is determined by the location
even on the most detailed craft it doesn't lag if i'm at a not very detailed locatin
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Re: Lag Spiking in Flightgear

Postby Hooray » Mon Dec 21, 2020 6:40 pm

It's primarily a function of scene(ry) complexit, i.e. surrounding terrain - which is why some folks are currently working on WS 3.0 and better LOD scheme.
Please don't send support requests by PM, instead post your questions on the forum so that all users can contribute and benefit
Thanks & all the best,
Hooray
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pui2canvas | MapStructure | Canvas Development | Programming resources
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